Small wire harness drives big manufacturing

In the production workshop of Langfang Lenny Wire Harness System Co., Ltd., intelligent devices operate at high speed, and the wire harnesses on the conveyor belt shuttle like flowing water. On average, one finished wire harness is taken offline every 4 seconds. This enterprise, founded in 2013, is now a supplier of Beijing Benz and Xiaomi automobiles, with 31 Mercedes Benz production lines and 18 Xiaomi production lines, with an annual production capacity of about 720000 sets, becoming an indispensable part of the Beijing Tianjin automobile industry chain.

A seemingly ordinary wiring harness is actually the "neural network" of a car, directly related to the performance and safety of the entire vehicle. Liu Yanjie, a harness engineer from Langfang Lenny, emphasized to reporters that "from the storage of raw materials to the delivery of final products, every link embodies our professionalism and focus." Under the guidance of the engineer, the reporter visited the "full life cycle" of harness production on site: witnessing precision machining in the wire breaking and crimping area, observing assembly on the fixture board assembly line, and learning about the intelligent system that accurately matches production materials through the OGC intelligent detection area - where intuitive lighting guidance and intelligent detection can accurately match each wire. In the final electrical testing stage, each wire harness must undergo multiple rigorous tests including conductivity testing, insulation resistance testing, and withstand voltage testing to ensure zero defects before leaving the factory.

Behind the rapid growth of enterprises is the powerful driving force provided by the coordinated development of Beijing Tianjin Hebei. Under the industrial pattern of "Beijing R&D, Tianjin Hebei Manufacturing", Langfang Lenny Wire Harness not only refines the existing business of Beijing Benz, but also gradually develops the high-voltage wire harness market of BAIC New Energy and "new forces in car manufacturing" enterprises. In 2018, Langfang Lenny Wire Harness established a research and development center, which was recognized as a Langfang municipal research and development platform and enterprise technology center in the same year. In 2019, it passed the high-tech enterprise qualification certification. At present, the company has 36 utility model patents and 29 software copyrights.

Sanhe City also fully supports the development of automotive parts enterprises from multiple dimensions such as preferential policies for enterprises, talent reserves, and technological innovation. With the dual assistance of policies and regional coordination, from January to July 2025, Langfang Lenny Wire Harness System Co., Ltd. has accumulated a revenue of 2.222 billion yuan, a year-on-year increase of 34%.

From small wire harnesses to large-scale manufacturing, Langfang Lenny wire harnesses are connecting the Beijing Tianjin Hebei automotive industry ecosystem at a "Chinese speed" of one every 4 seconds, becoming a bright landscape in regional collaborative innovation.